Device and method for treating hydrocephalus
First Claim
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1. A method, comprising:
- pumping in a human body, using a collector tube having a tip section, a discharge tube having an end section, and a tube shaped element between said collector tube and said discharge tube, said pumping including pinching at least one portion of said tube shaped element to pump fluid from said collector tube to said discharge;
sensing a pressure in a body cavity and producing an output indicative of the sensed pressure; and
controlling said pinching based on said output indicative of the sensed pressure, to control an amount of said pumping using an automated controller to create plural pressure waves, which are reflected, said controlling creating said pressure waves at a first frequency and duty cycle to sum said pressure waves and said reflected pressure waves by controlling said pinching to create a new pressure wave at a time when another wave is reflected to a location of said pinching, to pump fluid within the human body in a first direction from said collector tube to said discharge tube.
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Abstract
A shunt system for use in a human body that is formed from a length of tube that is configured as a pump. The length of tube may be configured as a hydroimpedance pomp, whose surfaces are pressed to pump fluid in the specified direction and way. The length of tube that forms the pump may be connected to shunt inlet and outlet parts, and may also include a valve that is adjustable to prevent back draining of fluid.
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Citations
15 Claims
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1. A method, comprising:
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pumping in a human body, using a collector tube having a tip section, a discharge tube having an end section, and a tube shaped element between said collector tube and said discharge tube, said pumping including pinching at least one portion of said tube shaped element to pump fluid from said collector tube to said discharge; sensing a pressure in a body cavity and producing an output indicative of the sensed pressure; and controlling said pinching based on said output indicative of the sensed pressure, to control an amount of said pumping using an automated controller to create plural pressure waves, which are reflected, said controlling creating said pressure waves at a first frequency and duty cycle to sum said pressure waves and said reflected pressure waves by controlling said pinching to create a new pressure wave at a time when another wave is reflected to a location of said pinching, to pump fluid within the human body in a first direction from said collector tube to said discharge tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A catheter shunt system, comprising:
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a first collector catheter; a second, discharge catheter; a pump, formed of a length of tubing, and connected to said first and second catheters, and allowing pumping of fluid from said first catheter to said second catheter; a pinching mechanism to create plural pressure waves in said length of tubing, which are reflected; a body cavity pressure sensor that senses a pressure in a body cavity and produces an output indicative of the sensed pressure; and a controller, responsive to said output of said body cavity pressure sensor, controlling said pressure waves to occur at a frequency and duty cycle to sum said pressure waves in a way to cause and control a quantity of said pumping by controlling said pinching mechanism to create a new pressure wave at a time when another wave is reflected to a location of said pinching mechanism, wherein said pinching mechanism includes a first actuator part pressing against and capable of at least partially constricting a first portion of said length of tubing, and a second actuator part, pressing against and capable of at least partially constricting a second portion of said length of tubing, spaced from said first portion of said length of tubing, wherein said controller controls said first and second actuator parts to sum said pressure waves, using a pattern of pinching said first actuator part and said second actuator part that sustains a pressure gradient in a way that lowers body cavity pressure, and wherein said one of said actuator parts is operable to completely pinch off a first portion of said length of tubing when completely actuated, based on said output.
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Specification